Paper sizes Questions
Standard formats, dimensions and choosing a sheet.
20 answers in this topic. Select a question for its dedicated reference page.
01What size is A4 paper?
A4 is 210 × 297 mm, or 8.27 × 11.69 in. It is the standard office format in most countries outside North America.
02What is A4 versus Letter?
A4 is 210 × 297 mm; US Letter is 8.5 × 11 in (215.9 × 279.4 mm). Letter is wider and shorter.
03What is Letter size in mm?
US Letter is 215.9 × 279.4 mm. Use the full measurement for print production.
04What size is Legal paper?
US Legal measures 8.5 × 14 in, or 215.9 × 355.6 mm.
05What size is A3 paper?
A3 is 297 × 420 mm, or 11.69 × 16.54 in. It has twice the area of A4.
06What size is A5 paper?
A5 is 148 × 210 mm, or 5.83 × 8.27 in. It has half the area of A4.
07What is half of A4?
A5 is half of A4 when cut parallel to A4’s shorter edge.
08What is double A4?
A3 is twice the area of A4. Two A4 pages make an A3 sheet.
09What is the biggest A size?
A0 is the largest ISO A size: 841 × 1189 mm and approximately one square meter.
10Why do A sizes keep the same shape?
ISO A sizes use a 1:√2 ratio, so halving a sheet preserves its proportions.
11What size is Tabloid?
Tabloid is 11 × 17 in, or 279.4 × 431.8 mm.
12What is Ledger size?
Ledger is 17 × 11 in. It is the same sheet as Tabloid in the other orientation.
13What size is Executive?
Executive is 7.25 × 10.5 in, or 184.15 × 266.7 mm.
14What is Half Letter?
Half Letter is 5.5 × 8.5 in, or 139.7 × 215.9 mm.
15What is ANSI A?
ANSI A is 8.5 × 11 in, the same dimensions as US Letter.
16What size is ISO B5?
ISO B5 is 176 × 250 mm, between A4 and A5.
17What paper size works for a flyer?
A5 is a common handout size; A4 holds more detail; A6 suits compact promotions.
18What paper size works for a poster?
A3 suits close viewing, A2 a noticeboard, and A1 or A0 a greater viewing distance.
19How should I choose A4 or A5?
Use A4 for documents and detailed pages. Choose A5 for portability, lower paper cost or booklets.
20Are photo sizes standard paper sizes?
Not necessarily. Photo formats such as 4 × 6 in are nominal image formats with different aspect ratios.